Seeker, I experience something very similar to yours, almost more intensely though. I will go a few weeks where I will have several LDs in the morning every morning and several if I take a nap at any point in the day...then they will vanish for a week or two...then all of a sudden come back with a bang. I would also love to know what is causing this. I haven't really changed my sleeping patterns at all, or eating habits or anything. I thought it might have something to do with varying hormones during my monthly cycle, but since guys experience this too that cannot be it. I wonder if it could have something to do with the phases of the moon? Or other planetary activities? Something to look into for sure... good topic Seeker.